compiler-rt/lib/fuzzer/FuzzerPlatform.h

   1 //===-- FuzzerPlatform.h --------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 // Common platform macros.
   9 //===----------------------------------------------------------------------===//
  10
  11 #ifndef LLVM_FUZZER_PLATFORM_H
  12 #define LLVM_FUZZER_PLATFORM_H
  13
  14 // Platform detection.
  15 #ifdef __linux__
  16 #define LIBFUZZER_APPLE 0
  17 #define LIBFUZZER_FUCHSIA 0
  18 #define LIBFUZZER_LINUX 1
  19 #define LIBFUZZER_NETBSD 0
  20 #define LIBFUZZER_FREEBSD 0
  21 #define LIBFUZZER_WINDOWS 0
  22 #define LIBFUZZER_EMSCRIPTEN 0
  23 #elif __APPLE__
  24 #define LIBFUZZER_APPLE 1
  25 #define LIBFUZZER_FUCHSIA 0
  26 #define LIBFUZZER_LINUX 0
  27 #define LIBFUZZER_NETBSD 0
  28 #define LIBFUZZER_FREEBSD 0
  29 #define LIBFUZZER_WINDOWS 0
  30 #define LIBFUZZER_EMSCRIPTEN 0
  31 #elif __NetBSD__
  32 #define LIBFUZZER_APPLE 0
  33 #define LIBFUZZER_FUCHSIA 0
  34 #define LIBFUZZER_LINUX 0
  35 #define LIBFUZZER_NETBSD 1
  36 #define LIBFUZZER_FREEBSD 0
  37 #define LIBFUZZER_WINDOWS 0
  38 #define LIBFUZZER_EMSCRIPTEN 0
  39 #elif __FreeBSD__
  40 #define LIBFUZZER_APPLE 0
  41 #define LIBFUZZER_FUCHSIA 0
  42 #define LIBFUZZER_LINUX 0
  43 #define LIBFUZZER_NETBSD 0
  44 #define LIBFUZZER_FREEBSD 1
  45 #define LIBFUZZER_WINDOWS 0
  46 #define LIBFUZZER_EMSCRIPTEN 0
  47 #elif _WIN32
  48 #define LIBFUZZER_APPLE 0
  49 #define LIBFUZZER_FUCHSIA 0
  50 #define LIBFUZZER_LINUX 0
  51 #define LIBFUZZER_NETBSD 0
  52 #define LIBFUZZER_FREEBSD 0
  53 #define LIBFUZZER_WINDOWS 1
  54 #define LIBFUZZER_EMSCRIPTEN 0
  55 #elif __Fuchsia__
  56 #define LIBFUZZER_APPLE 0
  57 #define LIBFUZZER_FUCHSIA 1
  58 #define LIBFUZZER_LINUX 0
  59 #define LIBFUZZER_NETBSD 0
  60 #define LIBFUZZER_FREEBSD 0
  61 #define LIBFUZZER_WINDOWS 0
  62 #define LIBFUZZER_EMSCRIPTEN 0
  63 #elif __EMSCRIPTEN__
  64 #define LIBFUZZER_APPLE 0
  65 #define LIBFUZZER_FUCHSIA 0
  66 #define LIBFUZZER_LINUX 0
  67 #define LIBFUZZER_NETBSD 0
  68 #define LIBFUZZER_FREEBSD 0
  69 #define LIBFUZZER_WINDOWS 0
  70 #define LIBFUZZER_EMSCRIPTEN 1
  71 #else
  72 #error "Support for your platform has not been implemented"
  73 #endif
  74
  75 #if defined(_MSC_VER) && !defined(__clang__)
  76 // MSVC compiler is being used.
  77 #define LIBFUZZER_MSVC 1
  78 #else
  79 #define LIBFUZZER_MSVC 0
  80 #endif
  81
  82 #ifndef __has_attribute
  83 #define __has_attribute(x) 0
  84 #endif
  85
  86 #define LIBFUZZER_POSIX                                                        \
  87   (LIBFUZZER_APPLE || LIBFUZZER_LINUX || LIBFUZZER_NETBSD ||                   \
  88    LIBFUZZER_FREEBSD || LIBFUZZER_EMSCRIPTEN)
  89
  90 #ifdef __x86_64
  91 #if __has_attribute(target)
  92 #define ATTRIBUTE_TARGET_POPCNT __attribute__((target("popcnt")))
  93 #else
  94 #define ATTRIBUTE_TARGET_POPCNT
  95 #endif
  96 #else
  97 #define ATTRIBUTE_TARGET_POPCNT
  98 #endif
  99
 100 #ifdef __clang__ // avoid gcc warning.
 101 #if __has_attribute(no_sanitize)
 102 #define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
 103 #else
 104 #define ATTRIBUTE_NO_SANITIZE_MEMORY
 105 #endif
 106 #define ALWAYS_INLINE __attribute__((always_inline))
 107 #else
 108 #define ATTRIBUTE_NO_SANITIZE_MEMORY
 109 #define ALWAYS_INLINE
 110 #endif // __clang__
 111
 112 #if LIBFUZZER_WINDOWS
 113 #define ATTRIBUTE_NO_SANITIZE_ADDRESS
 114 #else
 115 #define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
 116 #endif
 117
 118 #if LIBFUZZER_WINDOWS
 119 #define ATTRIBUTE_ALIGNED(X) __declspec(align(X))
 120 #define ATTRIBUTE_INTERFACE __declspec(dllexport)
 121 // This is used for __sancov_lowest_stack which is needed for
 122 // -fsanitize-coverage=stack-depth. That feature is not yet available on
 123 // Windows, so make the symbol static to avoid linking errors.
 124 #define ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC static
 125 #define ATTRIBUTE_NOINLINE __declspec(noinline)
 126 #else
 127 #define ATTRIBUTE_ALIGNED(X) __attribute__((aligned(X)))
 128 #define ATTRIBUTE_INTERFACE __attribute__((visibility("default")))
 129 #define ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC                                  \
 130   ATTRIBUTE_INTERFACE __attribute__((tls_model("initial-exec"))) thread_local
 131
 132 #define ATTRIBUTE_NOINLINE __attribute__((noinline))
 133 #endif
 134
 135 #if defined(__has_feature)
 136 #if __has_feature(address_sanitizer)
 137 #define ATTRIBUTE_NO_SANITIZE_ALL ATTRIBUTE_NO_SANITIZE_ADDRESS
 138 #elif __has_feature(memory_sanitizer)
 139 #define ATTRIBUTE_NO_SANITIZE_ALL ATTRIBUTE_NO_SANITIZE_MEMORY
 140 #else
 141 #define ATTRIBUTE_NO_SANITIZE_ALL
 142 #endif
 143 #else
 144 #define ATTRIBUTE_NO_SANITIZE_ALL
 145 #endif
 146
 147 #endif // LLVM_FUZZER_PLATFORM_H